easy task, please could you share some values of your shortened DMM probes. here are some of mine.
I don't have any FLUKE leads or FLUKE leads w/ installed F crocodile clips.
Thanks for sharing!!
EDIT:
Oh shoot. it makes sense not to plug in the leads but to take 'external' measurements of the probes by delta'ing out all resistances to zero, i.e. of the dmm internal resistance plus of the plugged in leads. Then we get a fair measurement of the second pair of leads, which must be shortened of course.
Let me try it!
stock leads plugged in, delta'ing zero, measuring resistance of diy leads w/ crocos: "0.02Ω"
stock leads plugged in, delta'ing zero, measuring resistance of hc leads w/ crocos: "0.03Ω"
stock leads plugged in, delta'ing zero, measuring resistance of BG leads: "1.54Ω"
hc leads w/ crocos plugged in, delta'ing zero, measuring resistance of diy leads w/ crocos: "0.02Ω"
hc leads w/ crocos plugged in, delta'ing zero, measuring resistance of stock leads: "0.19Ω"
hc leads w/ crocos plugged in, delta'ing zero, measuring resistance of BG leads w/ crocos: "1.57Ω"
BG leads w/o crocos plugged in, delta'ing zero, measuring resistance of diy leads w/ crocos: "0.02Ω"
BG leads w/o crocos plugged in, delta'ing zero, measuring resistance of hc leads w/ crocos: "0.03Ω"
BG leads w/o crocos plugged in, delta'ing zero, measuring resistance of stock leads: "0.19Ω"
diy leads w/ crocos plugged in, delta'ing zero, measuring resistance of hc leads w/ crocos: ~"0.05Ω"
diy leads w/ crocos plugged in, delta'ing zero, measuring resistance of stock leads: ~"0.20Ω"
diy leads w/ crocos plugged in, delta'ing zero, measuring resistance of BG leads w/ crocos: ~"1.57Ω"
My diy leads have a loose connection in the DMM socket and it is almost impossible to get a reliable or reproducible reading with them!
Summary:
the Ohms measurements are very consistent and it does not make a difference how one measures the resistance. the delta button of the DMM comes in handy but one can just insert the leads in the DMM socket and short the probes: whatever the DMM displays, that's the resistance of your set of leads. Although the DMM device itself must have an internal resistance, its value does not show in the displayed Ohms number … as if the DMM internally delta zero'ed it beforehand, i.e. DMM internal resistance ≡ 0.00Ω, for the user's viewing convenience! :D
The order of resistances of my four sets of leads are:
diy leads w/ diy crocos (~20mΩ)
< hc leads w/ hc crocos (~30mΩ)
< stock leads (~190mΩ)
< BG leads w/ bg crocos (~1570mΩ)
The high resistance of the stock leads is disappointing. Wondering how good FLUKE leads are!